﻿using System;
using System.Globalization;

class TimeAfterSomeTime
{
    static void Main()
    {
        DateTime date = DateTime.ParseExact("27.02.2006:12:12:12", "dd.MM.yyyy:hh:mm:ss", CultureInfo.InvariantCulture);
        DateTime result = date.AddHours(6.5);
        Console.WriteLine(result);
    }
}